WO2020203296A1 - Moteur électrique - Google Patents

Moteur électrique Download PDF

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Publication number
WO2020203296A1
WO2020203296A1 PCT/JP2020/011983 JP2020011983W WO2020203296A1 WO 2020203296 A1 WO2020203296 A1 WO 2020203296A1 JP 2020011983 W JP2020011983 W JP 2020011983W WO 2020203296 A1 WO2020203296 A1 WO 2020203296A1
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WO
WIPO (PCT)
Prior art keywords
holding piece
bushing
electric motor
outer shell
motor
Prior art date
Application number
PCT/JP2020/011983
Other languages
English (en)
Japanese (ja)
Inventor
忠雄 松岡
智則 小嶋
雅樹 山田
田邉　洋一
庸佑 松井
颯馬 守屋
パーオブトン パッタラワディー
Original Assignee
株式会社富士通ゼネラル
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社富士通ゼネラル filed Critical 株式会社富士通ゼネラル
Priority to CN202080019385.XA priority Critical patent/CN113544946A/zh
Publication of WO2020203296A1 publication Critical patent/WO2020203296A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes

Definitions

  • the present invention relates to an electric motor provided with a bushing through which wiring of a control circuit board is passed.
  • an inner rotor type permanent magnet electric motor in which a rotor having a permanent magnet is rotatably arranged inside a stator that generates a rotating magnetic field is known.
  • This permanent magnet electric motor is used, for example, for rotationally driving a blower fan mounted on an air conditioner.
  • a permanent magnet electric motor of this type has a circuit board for control inside, and the wiring connected to the circuit board is pulled out to the outside through a bushing.
  • this kind of bushing there is a bushing that is divided into a pair of holding pieces, a first holding piece and a second holding piece, and these are connected via a connecting portion (see, for example, Patent Document 1). )
  • the bushing By dividing the bushing into two holding pieces, the work of passing the wiring through the bushing becomes easy. Further, since the two holding pieces are connected via the connecting portion, the two holding pieces are not separated and the assembling property is improved.
  • hinges are generally used as connecting parts. In this case, if the hinge is opened excessively, the hinge may be broken due to the load applied to the hinge, and the bushing may be damaged. It has been desired to prevent this damage.
  • an object of the present invention is to provide an electric motor provided with a bushing capable of preventing damage to the hinge (part).
  • One aspect of the electric motor of the present invention is a stator having a stator core and windings, a motor outer shell covering the stator, a circuit board arranged in the motor outer shell, and attached to the motor outer shell. It includes a bushing for holding the wiring drawn from the circuit board to the outside of the outer shell of the motor.
  • the bushing has a first holding piece, a second holding piece, and a hinge portion.
  • the hinge portion connects one end of the first holding piece and one end of the second holding piece to each other, and brings the other end of the first holding piece and the other end of the second holding piece close to each other. Or open and close in the direction of separation.
  • Each of the first holding piece and the second holding piece is provided with an angle regulating portion that regulates the opening angle of the hinge portion.
  • FIG. 6 is a rear perspective view (a) and a front perspective view (b) with the bushing of FIG. 6 open. It is a rear view (a) of the bushing open state which concerns on one Embodiment of this invention, and is the rear view (b) of the bushing open state which concerns on another 1st Embodiment of this invention. It is a rear view (a) of the bushing in an open state and the rear view (b) of a closed state which concerns on another 2nd Embodiment of this invention. It is a perspective view (a) which shows the state before the bushing of FIG. 6 is attached to the motor outer shell of FIG. 3, and is the perspective view (b) which shows the state after it is attached.
  • ⁇ Overall configuration of the motor> 1 to 13 are views for explaining the configuration of the electric motor 1 in this embodiment.
  • the permanent magnet electric motor 1 is, for example, a brushless DC motor.
  • the electric motor 1 is used, for example, to rotationally drive a blower fan mounted on an outdoor unit of an air conditioner.
  • the permanent magnet electric motor 1 in the present embodiment includes a stator (stator) 2, a rotor (rotor) 3, and a motor outer shell (housing) 6.
  • the stator 2 is provided via a stator core 21 having a cylindrical yoke portion and a plurality of teeth portions extending from the yoke portion to the inner diameter side, and an insulator 22. A winding 23 wound around the teeth portion is provided.
  • the stator 2 is covered with a motor outer shell 6 made of resin, except for the inner peripheral surface of the stator core 21. That is, the motor outer shell 6 covers the stator 2 (stator) including the stator core 21 and the winding 23.
  • the motor outer shell 6 may be made of a metal such as a steel plate or aluminum.
  • the motor outer shell 6 is formed with a groove 64 at the end of the motor 1 on the opposite output side to which a bushing 7 described later is attached.
  • the shape of the groove portion 64 (and the second flange portion 712 of the bushing 7) may be any shape as long as the bushing 7 can be attached (held) to the motor outer shell 6.
  • the groove portion 64 has a bottom portion on the output side in the direction of the central axis O (hereinafter, the central axis direction) of the motor outer shell 6, and is a notch that penetrates in the radial direction and is close to a rectangular shape.
  • the groove portion 64 is provided with a wall portion 641 to which the second flange portion 712 of the bushing 7, which will be described later, comes into contact with the groove portion 64, thereby restricting the movement of the bushing 7 in the radial direction.
  • the groove portion 64 has a convex shape toward the outer diameter side when viewed from the central axis direction.
  • a waterproof wall portion 643 that covers the notch portion 714 in the radial direction is provided in order to prevent water and dust from entering from the notch portion 714 of the second flange portion 712, which will be described later. ing.
  • the waterproof wall portion 643 is in contact with the second flange portion 712 of the bushing 7, which will be described later, to restrict the movement of the bushing 7 in the radial direction, similarly to the wall portion 641.
  • the groove portion 64 is provided with a bottomed hole portion 642 (relief portion) in which the angle regulating portion 74 of the second flange portion 712, which will be described later, is located.
  • the hole portion 642 has a rectangular shape when viewed from the central axis direction.
  • the rotor 3 is rotatably arranged with a predetermined gap on the inner peripheral side of the stator core 21 of the stator 2.
  • the rotor 3 is a surface magnet type in which permanent magnets 31 are arranged in an annular shape on the outer peripheral surface facing the stator core 21.
  • the permanent magnet 31 is fixed around the shaft 35 via the outer peripheral side iron core 32, the insulating member 33, and the inner peripheral side iron core 34.
  • the shaft 35 is supported by the first bearing 41 and the second bearing 42, and the first bearing 41 is supported by the first bracket 51 and the second bearing 42 is supported by the second bracket 52, so that the rotor 3 is supported. It is rotatably supported.
  • the first bearing 41 rotatably supports one end side (output side) of the shaft 35 of the rotor 3.
  • the second bearing 42 rotatably supports the other end side (counter-output side) of the shaft 35 of the rotor 3.
  • first bearing and the second bearing 42 for example, ball bearings are used.
  • the first bracket 51 is made of metal (steel plate, aluminum, etc.) and is arranged on one end side of the motor outer shell 6 in the central axis direction, that is, on the output side of the shaft 35.
  • the first bracket 51 is insert-molded at the time of molding the motor outer shell 6 and is integrated with the motor outer shell 6.
  • the second bracket 52 is made of metal (steel plate, aluminum, etc.) and is fixed to the other end side of the motor outer shell 6 in the central axis direction, that is, the counter-output side of the shaft 35, as shown in FIGS. 12 and 13. There is.
  • the second bracket 52 is formed in a substantially disk shape, has an outer edge portion 520 that abuts on the end surface of the motor outer shell 6 in the central axial direction, and the outer edge portion 520 is screwed to the outer edge portion of the motor outer shell 6. Has been done. Further, in the central portion of the second bracket 52, a second bearing accommodating portion 522 for accommodating the second bearing 42 is formed on the inner surface side (output side).
  • the second bracket 52 is provided with heat radiation fins 523 erected outward (anti-output side) on the counter-output side thereof, and is a circuit board 82 for controlling the electric motor 1 via the heat transfer member 81. Is in contact with. That is, the second bracket 52 also functions as a heat sink that dissipates heat from the circuit board 82 (particularly, the electronic component 821 mounted on the circuit board 82) to the outside of the electric motor 1.
  • the rotor 3 has a permanent magnet 31, an outer peripheral side iron core 32, an insulating member (connecting portion) 33, and an inner peripheral side iron core 34 from the outer diameter side to the inner diameter side. And the shaft 35 is provided.
  • the permanent magnet 31 is formed in an annular shape by a plurality of (for example, 8 or 10) permanent magnet pieces 311 so that the north and south poles appear alternately at equal intervals in the circumferential direction. ing.
  • a plastic magnet formed in an annular shape by solidifying the magnet powder with a resin may be used.
  • the outer peripheral side iron core 32 is formed in an annular shape and is located on the inner diameter side of the permanent magnet 31.
  • the outer peripheral side iron core 32 is provided with a plurality of outer peripheral side protrusions 322 (for example, 10 in the circumferential direction) protruding from the outer peripheral surface to the outer diameter side in order to position the permanent magnet 31.
  • the outer peripheral side protrusion 322 is formed so as to extend from one end to the other end of the outer peripheral side iron core 32 in the central axis direction.
  • the inner peripheral side iron core 34 is formed in an annular shape and is located on the inner diameter side of the outer peripheral side iron core 32. Further, a through hole 343 penetrating in the central axial direction is provided at the center of the inner peripheral side iron core 34.
  • the shaft 35 is fixed to the through hole 343 of the inner peripheral side iron core 34 by press fitting or caulking.
  • the inner peripheral side iron core 34 may be provided with a plurality of through holes 342 for lightening the weight between the through hole 343 and the outer peripheral surface of the inner peripheral side iron core 34. These plurality of through holes 342 are arranged at equal intervals in the circumferential direction so that the shape of the inner peripheral side iron core 34 in which the through holes 342 are formed becomes a spoke shape when viewed from the central axis direction.
  • the insulating member 33 is made of a dielectric resin such as PBT (polybutylene terephthalate) or PET (polyethylene terephthalate), and is located between the outer peripheral side iron core 32 and the inner peripheral side iron core 34.
  • the insulating member 33 is integrally formed with the outer peripheral side iron core 32 and the inner peripheral side iron core 34 by insert molding in which a resin is filled between the outer peripheral side iron core 32 and the inner peripheral side iron core 34.
  • the insulating member 33 has a small capacitance between the outer peripheral side iron core 32 and the inner peripheral side iron core 34 (a part of the capacitance between the winding 23 of the stator 2 and the shaft 35).
  • the electric motor 1 includes a bushing 7 for passing wiring from the inside of the motor outer shell 6.
  • the electric motor 1 includes a motor outer shell 6 and a circuit board 82 arranged in the motor outer shell 6.
  • the circuit board 82 is arranged at a position between the rotor 3 and the second bearing 42 in the central axis direction.
  • the bushing 7 is attached to the motor outer shell 6 and holds a wiring (not shown) drawn from the circuit board 82 (not shown) to the outside of the motor outer shell 6.
  • the bushing 7 includes a mounting portion 71 attached to the groove portion 64 of the motor outer shell 6 described above, and a wiring passing portion 72 through which wiring is passed.
  • the wiring passage portion 72 has a cylindrical shape, and wiring is passed through the inside.
  • the mounting portion 71 has a rectangular parallelepiped shape, and is integrated with the wiring passing portion 72 so that wiring can pass in the X-axis direction of FIG.
  • the mounting portion 71 and the wiring passing portion 72 are not limited to the above-mentioned shapes.
  • the wiring passage portion 72 has a plurality of convex portions 721 on a cylindrical outer peripheral surface. As a result, the strength of the wiring through portion 72 is increased.
  • four convex portions 721 are provided at equal intervals in the circumferential direction as an example.
  • the mounting portion 71 may be formed with a plurality of bottomed lightening groove portions 713 along the cylindrical axis of the wiring through portion 72.
  • the lightening groove portion 713 is a substantially triangular shape having one side surface curved in an arc shape at a position where it does not overlap with each convex portion 721 provided on the outer peripheral surface of the cylindrical wiring passage portion 72 in the X-axis direction.
  • Four columnar holes are provided.
  • the first flange portion 711 extending in the Y-axis direction is on the upper portion (Z-axis positive direction side in FIG. 6) of the outer surface side (X-axis positive direction side in FIG. 6) of the mounting portion 71. Is provided.
  • the first flange portion 711 regulates the radial movement of the bushing 7 in cooperation with the upper end portion on the outer peripheral surface of the motor outer shell 6, and fixes the bushing 7 to the motor outer shell 6 (FIGS. 6 to 6). 11).
  • the mounting portion 71 is in the Y-axis and Z-axis (central axis O) directions.
  • a second flange portion 712 extending in the direction is provided.
  • the second flange portion 712 regulates the radial movement of the bushing 7 in cooperation with the wall portion 641 and the waterproof wall portion 643 provided in the groove portion 64 of the motor outer shell 6, and makes the bushing 7 the motor outer shell. It is fixed to 6 (see FIGS. 6 to 11).
  • the end of the first flange portion 711 on the negative Z-axis direction and the end of the second flange portion 712 on the positive Z-axis direction have the same height (Z-axis direction) when viewed from the X-axis direction. At the same position).
  • the first flange portion 711 and the second flange portion 712 are not limited to the above-mentioned shapes as long as they can regulate the movement of the bushing 7 with respect to the motor outer shell 6.
  • the bushing 7 is formed from the upper portion (Z-axis forward side) of the bushing 7 to the first holding piece 7A and the second holding piece 7B.
  • the first holding piece 7A and the second holding piece 7B are integrally connected to each other via a hinge portion 73 provided at the lower part (Z-axis negative direction side) of the bushing 7. Therefore, the first flange portion 711 and the second flange portion 712 described above are formed on the first holding piece 7A and the second holding piece 7B, respectively (see FIG. 7).
  • the bushing 7 has a first holding piece 7A, a second holding piece 7B, and a hinge portion 73.
  • the hinge portion 73 connects one end portion 7C of the first holding piece 7A in the Z-axis direction (see FIG. 6) and one end portion 7C of the second holding piece 7B in the Z-axis direction, and connects the Z-axis of the first holding piece 7A.
  • the other end 7AC in the direction and the other end 7BC in the Z-axis direction of the second holding piece 7B are opened and closed in a direction of approaching or separating.
  • the hinge portion 73 is a bendable living hinge integrally formed between the first holding piece 7A and the second holding piece 7B with a thin wall (for example, a thickness of 0.5 mm).
  • the hinge portion 73 is formed so that the width of the portion connecting the first holding piece 7A and the second holding piece 7B is shortened.
  • the one end 7C of the first holding piece 7A and the one end 7C of the second holding piece 7B are connected by the hinge portion 73 in a state of being close to each other.
  • an angle regulating unit 74 that regulates the opening angle of the bushing 7 is provided.
  • a first engaging portion 715A is formed at a position close to one end 7C of the first holding piece 7A, and a first engaging portion 715B is formed at a position close to one end 7C of the second holding piece 7B. Will be done.
  • the first engaging portion 715A of the first holding piece 7A and the first engaging portion 715B of the second holding piece 7B engage with each other when the bushing 7 is closed by the hinge portion 73.
  • a second engaging portion 716A is formed on the other end 7AC of the first holding piece 7A, and a second engaging portion 716B is formed on the other end 7BC of the second holding piece 7B.
  • the second engaging portion 716A of the first holding piece 7A and the second engaging portion 716B of the second holding piece 7B engage with each other when the hinge portion 73 is closed. Further, these engaging portions 715A, 715B, 716A, and 716B prevent water and dust from passing from these engaging portions in the X-axis direction of the bushing 7 when the bushing 7 is closed by the hinge portion 73. It also functions as a labyrinth structure.
  • the second engaging portions 716A and 716B are formed in a two-stage labyrinth structure having a semi-cylindrical shape and a rectangular shape in the X-axis direction in order to enhance the sealing effect.
  • the second flange portion 712A of the first holding piece 7A and the second flange portion 712B of the second holding piece 7B are notched at one end 7C of the first holding piece 7A and one end 7C of the second holding piece 7B.
  • Parts 714A and 714B are formed, respectively (see FIGS. 7 and 8).
  • the bushing 7 can be opened and closed around the hinge portion 73.
  • the notch portions 714A and 714B by forming the notch portions 714A and 714B, the first holding piece 7A and the second holding piece 7B have notch surfaces facing each other (first regulation surface 714C, second regulation surface 714D). Is formed.
  • Each of the first holding piece 7A and the second holding piece 7B is provided with an angle regulating portion (stopper) 74 that regulates the opening angle of the bushing 7.
  • the angle regulating portion 74 is formed on each of the second flange portion 712A of the first holding piece 7A and the second flange portion 712B of the second holding piece 7B.
  • the above-mentioned cutout surfaces are provided on the first holding piece 7A and the second holding piece 7B as the angle regulating portion 74, respectively.
  • the angle regulating portions 74 are formed at locations of the second flange portions 712A and 712B close to the hinge portions 73. Has been done. Then, for example, as shown in FIG. 8A, when the bushing 7 is opened, the ends of the regulating surfaces 714C and 714D abut against each other, so that the bushing 7 cannot be opened any more.
  • the opening angle of the bushing 7 is regulated.
  • the angle regulating unit 74 not only regulates the angle at which a part of the regulating surfaces 714C and 714D provided on the first holding piece 7A and the second holding piece 7B respectively directly contact and open.
  • the opening angle of the bushing 7 may be indirectly regulated via a member located between the notch surfaces (regulating surfaces 714C, 714D) facing each other. For example, as shown in FIG. 8B, when the thickness t of the flange connecting portion 714E connecting the second flange portions 712A and 712B is large, when the bushing 7 is to be closed, the thick flange connecting portion 714E is used. By being present between the notch surfaces (regulating surfaces 714C, 714D) facing each other, the bushing 7 is indirectly hindered from approaching the notching surfaces (regulating surfaces 714C, 714D) facing each other.
  • the opening angle is regulated.
  • the angle regulating portion 74 (regulating surfaces 714C and 714D in FIG. 8A, regulating surfaces 714C and 714D in FIG. 8B and flange connecting portion 714E) has one end 7C and a second holding piece of the first holding piece 7A. It is provided at a position adjacent to the hinge portion 73 at one end portion 7C of the 7B. That is, the angle regulating portion 74 is provided on the side opposite to the side where the bushing 7 opens (one end portion 7C side). Thereby, the opening angle of the bushing 7 can be regulated by a simple mechanism (angle regulating unit 74). In addition, it is possible to prevent the angle regulating unit 74 from becoming large. By providing the second flange portion 712A and the angle regulating portion 74, it is possible to simultaneously realize the regulation of the radial movement of the electric motor 1 of the bushing 7 and the regulation of the opening angle of the bushing 7.
  • the angle regulating portion 74 is formed at one end portion (second flange portion 712) of the bushing 7 in the X-axis direction (see FIG. 6), but the present invention is not limited to this, and thus functions as a stopper. If there is, it may extend partially (for example, from one end to the center of the bushing 7 in the X-axis direction) or entirely (from one end to the other end of the bushing 7 in the X-axis direction). Further, in the present embodiment, the angle regulating portion 74 is integrally molded with the bushing 7, but is adhered to the cutout surface (regulating surface 714C, 714D) of the bushing 7 as a separate component such as a resin or an elastic member. It may be done.
  • the angle regulating unit 74 functions as a stopper that regulates the rotation angle. As a result, it is possible to prevent the bushing 7 from being excessively opened and to prevent the hinge portion 73 from being damaged.
  • FIG. 9 is a rear view showing a bushing 7'related to another embodiment.
  • the bushing 7' is a cube-shaped or rectangular parallelepiped member (mounting portion) 71', and the member 71' is formed with a through hole 72'for passing wiring in the center.
  • a second flange portion 712' extends in the Y-axis and Z (O) -axis directions from one side of the back surface of the bushing 7'.
  • the bushing 7' is a pair of first holding pieces 7A and a second holding piece 7B, a pair of members (mounting portions) 71A', 71B', and a pair of flange portions 711A'. , 711B', and by rotating around the hinge 73', the bushing 7'opens and closes. Then, as shown in FIG. 9, the pair of flange portions 711A'and 711B' have notches 714A'and 714B' in the other end portions 7AC and 7BC of the first holding piece and the second holding piece. Is formed. This enables an opening / closing operation centered on the hinge portion 73'of the bushing 7'. Further, a pair of notched surfaces (first regulation surface 714C, second regulation surface 714D) facing each other are formed on the surfaces that approach each other when the bushing 7'is opened.
  • a pair of notched surfaces (first regulatory surface 714C and second regulatory surface 714D) regulate the opening angle of the hinge portion 73. That is, these first regulation surface 714C and second regulation surface 714D function as the angle regulation unit 74.
  • the first holding piece 7A'and the second holding piece 7B' rotate about the hinge portion 73'.
  • the first regulation surface 714C and the second regulation surface 714D come into surface contact with each other, and function as an angle regulation portion (stopper) so that the bushing 7'does not open more than necessary.
  • the bushing 7' can be prevented from being opened excessively, and the hinge portion 73'can be prevented from being damaged.
  • the angle formed by the first regulation surface 714C and the second regulation surface 714D is such that the bushing 7'is completely open (FIG. 9 (Fig. 9)).
  • the opening angle regulated in) (the angle formed by the respective dividing surfaces 7D of the first holding piece 7A'and the second holding piece 7B').
  • the angle formed by the respective dividing surfaces 7D of the first holding piece 7A'and the second holding piece 7B' in the state where the bushing 7'is fully opened (shown in FIG. 9A).
  • the angle formed by the first regulation surface 714C and the second regulation surface 714D when the bushing 7'is closed) is 105.6 degrees, but the present invention is not limited to this, and damage to the hinge portion 73'can be prevented. It may be within a predetermined range possible (for example, 45 degrees or more and 135 degrees or less).
  • the bushings 7 and 7'described above are members in which the first holding pieces 7A and 7A'and the second holding pieces 7B and 7B' are integrally molded, and are formed by, for example, injection molding of a resin.
  • the opening angle of the bushings 7 and 7'in a normal state in which no external force is applied is adjusted by adjusting the opening angle of the bushings 7 and 7'at the time of manufacture. Can be easily determined.
  • the bushings 7 and 7' are slightly opened (for example, in FIG. 9B, the first holding piece 7A'and the second holding piece 7B'are separately divided. It is preferable to mold the surface 7D so that the angle formed by the surface 7D is 35 degrees or more and 125 degrees or less). As a result, even in a normal state where no external force is applied, the bushings 7 and 7'are slightly opened, and the operation of opening the bushings 7 and 7'when passing the wiring through the wiring threading portion 72 can be omitted, and workability can be achieved. Is improved.
  • the second flange portion 712 of the bushing 7 (7') is inserted into the groove portion 64 of the motor outer shell 6 in the central axial direction, and the bushing 7 (7') is the motor. It is fixed to the outer shell 6 (see FIGS. 10 and 11).
  • the dividing surface 7D (see FIG. 9A) is arranged parallel to the central axis direction of the motor outer shell 6, and the outer surface of the bushing 7 is , Is held on the side wall of the groove portion 64.
  • the bushing 7 is attached so that the hinge portion 73 is arranged in the direction of fitting to the motor outer shell 6 (the output side of the electric motor 1). This makes it possible to prevent the bushing 7 from opening from the split surface 7D when the bushing 7 is fitted to the motor outer shell 6.
  • the angle regulating portions 74 (regulating surfaces 714C, 714D, flange connecting portions 714E) are provided on the bushings 7 and 7'as stoppers (angle regulating portions), and the bushing 7 is attached to the motor outer shell 6.
  • the load applied to the hinge portion 73 can be reduced and the bushing 7 can be prevented from being damaged.
  • Wiring threading part 7A, 7B First holding piece, second holding piece 73 ... Hinge part 74 ... Angle regulating part (stopper) 81 ... Heat transfer member 82 ... Circuit board 821 ... Electronic component O ... Central axis

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Abstract

Le problème décrit par la présente invention est de fournir un moteur électrique comprenant un manchon permettant d'empêcher un endommagement d'une charnière (partie). La solution selon l'invention porte sur un moteur électrique 1 comprenant : un stator 2 comportant un noyau 21 de stator et un enroulement 23 ; un carter externe 6 de moteur recouvrant ledit stator ; une carte de circuit imprimé positionnée à l'intérieur du carter externe de moteur ; et un manchon 7 fixé au carter externe de moteur et maintenant un fil s'étendant de la carte de circuit imprimé à une partie externe d'un carter. Le manchon comporte : une première pièce de maintien 7A ; une seconde pièce de maintien 7B ; et une partie charnière 73 qui relie l'une à l'autre les parties d'extrémité respectives 7C de la première pièce de maintien et de la seconde pièce de maintien, et qui s'ouvre et se ferme dans une direction dans laquelle les autres parties d'extrémité respectives 7AC, 7BC de la première pièce de maintien et de la seconde pièce de maintien sont séparées ou rapprochées l'une de l'autre. Une partie de limitation d'angle 74, qui limite un angle auquel s'ouvre la partie charnière, est prévue à la fois pour la première pièce de maintien et pour la seconde pièce de maintien.
PCT/JP2020/011983 2019-03-29 2020-03-18 Moteur électrique WO2020203296A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202080019385.XA CN113544946A (zh) 2019-03-29 2020-03-18 电动机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-069031 2019-03-29
JP2019069031A JP7306021B2 (ja) 2019-03-29 2019-03-29 電動機

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WO2020203296A1 true WO2020203296A1 (fr) 2020-10-08

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JP2013138551A (ja) * 2011-12-28 2013-07-11 Fujitsu General Ltd 電動機
JP2015185785A (ja) * 2014-03-26 2015-10-22 日本電産コパル電子株式会社 ケーブル導出構造
US20160240287A1 (en) * 2015-02-13 2016-08-18 Hubbell Incorporated Hinged split bushing

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